I have 2 RES, one male one female, which I inherited from my mother who could no longer keep them. I have been trying to care for them to the best of my ability, learning along with the way. The female seems to have some shell issues going on, and it's clearly time for a vet visit. The female RES's shell has a pinkish color to it that just recently appeared. I would just like some opinions, thank you in advance.